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Óskarssonite

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Níels Ö. Óskarsson
Formula:
AlF3
Crystal System:
Trigonal
Name:
Named by M.J. Jacobsen et al. in 2012 in honor of Níels Örn Óskarsson (1944-), volcanologist at the University of Iceland, for his work on Icelandic fumaroles.


Isostructural with:
The low-temperature form of AlF3. The Al analogue of waimirite-(Y). Anhydrous counterpart of rosenbergite and 'UM1988-02-F:AlHO'.

The mineral might have first been found by Rosenberg (1988) at Mt. Erebus.


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Classification of ÓskarssoniteHide

Approved
Approval Year:
2012
First Published:
2014

Chemical Properties of ÓskarssoniteHide

Formula:
AlF3

Crystallography of ÓskarssoniteHide

Crystal System:
Trigonal
Class (H-M):
3 - Rhombohedral
Space Group:
R3
Setting:
R3
Cell Parameters:
a = 4.9817(4) Å, c = 12.387(1) Å
Ratio:
a:c = 1 : 2.487
Unit Cell V:
266.23 ų
Z:
6

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
3.54(100)
2.131(13)
2.066(8)
2.044(8)
1.771(20)
1.613(8)
1.590(15)
1.574(10)
Comments:
From Type Description.

Type Occurrence of ÓskarssoniteHide

General Appearance of Type Material:
Sub-micron-sized crystals forming a white powder.
Place of Conservation of Type Material:
Icelandic Institute of Natural History, Gardabaer, Iceland, NI24489.
Natural History Museum of Denmark, Copenhagen, Denmark, 2012.112, 2012.113, 2012.114.
Geological Setting of Type Material:
Surface of fumaroles on the Eldfell volcano, Heimaey Island, Iceland
Associated Minerals at Type Locality:

Synonyms of ÓskarssoniteHide

Relationship of Óskarssonite to other SpeciesHide

Other Members of this group:
Waimirite-(Y)YF3Orth. mmm (2/m 2/m 2/m) : Pnma

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for ÓskarssoniteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Rosenberg, P.E. (1988) Aluminum fluoride hydrates, volcanogenic salts from Mount Erebus, Antarctica. American Mineralogist: 73: 855-860
Daniel, P., Bulou, A., Rousseau, M., Nouet, J., Fourquet, J.L., Leblance, M., Burriel, R. (1990) A study of the structural phase transitions in AlF3: x-ray powder diffraction, DSC and Raman scattering investigations of the lattice dynamics and phonon spectrum. Journal of Physics: Condensed Matter: 2: 5663-5677.
Jacobsen, M.J., Balić-Žunić, T., Mitolo, D., Katerinopoulou, A., Garavelli, A. and Jakobsson, S.P. (2013) Oskarssonite, IMA 2012-088. CNMNC Newsletter No. 16, August 2013, page 2697; Mineralogical Magazine: 77: 2695-2709.
Jacobsen, M.J., Balić-Žunić, T., Mitolo, D., Katerinopoulou, A., Garavelli, A., Jakobsson, S.P. (2014) Oskarssonite, AlF3, a new fumarolic mineral from Eldfell volcano, Heimaey, Iceland. Mineralogical Magazine: 78: 215-222.
Belakovskiy, D., Cámara, F., Uvarova, Y., Gagne, O.C. (2014) New mineral names. American Mineralogist: 99: 1806-1813.
Mitchell, R.H., Welch, M.D., Chakhmouradian, A.R. (2017) Nomenclature of the perovskite supergroup: A hierarchical system of classification based on crystal structure and composition. Mineralogical Magazine: 81: 411-461.

Internet Links for ÓskarssoniteHide

Localities for ÓskarssoniteHide

ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Antarctica
 
  • Eastern Antarctica
    • Victoria Land
      • Ross Island
Rosenberg, P.E. (1988): Aluminum fluoride hydrates, yolcanogenic salts from Mount Erebus, Antarctica. American Mineralogist: 73: 855-860
Brazil
 
  • Mato Grosso
    • Juína
Kaminsky, F.V., Wirth, R., Schreiber, A. (2013): Carbonatitic inclusions in deep mantle diamond from Juina, Brazil: new minerals in the carbonate-halide association. Can. Mineral. 51, 669-688.
Kaminsky, F. V., Ryabchikov, I. D., & Wirth, R. (2015). A primary natrocarbonatitic association in the Deep Earth. Mineralogy and Petrology, 1-12.
Iceland
 
  • Southern Region
Balić-Žunić T., Mitolo D., Garavelli A., Jakobsson S.P., Leonardsen E. (2014): New fumarolic minerals from Mt. Hekla volcano, Iceland: FeF3(H2O)3. Plinius, 40, 294.
    • Vestmannaeyjar archipelago (Westman islands)
      • Heimaey island
Jacobsen, M.J., Balić-Žunić, T., Mitolo, D., Katerinopoulou, A., Garavelli, A., Jakobsson, S.P. (2014): Oskarssonite, AlF3, a new fumarolic mineral from Eldfell volcano, Heimaey, Iceland. Mineralogical Magazine,78, 215-222.
Mineral and/or Locality  
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